There are a lot of factors influencing the price of bitcoin, including technical issues/new alts coming out/regulations/stubborn miners/conflicts between developers(or groups)...etc.
What do you think is the most crucial cause? Why did the price drop dramatically these days? Will this be a rebound point?
Volatility is caused by huge supply and demand, fueled by emotions and fear of losing. Also since the futures entered the game market is highly manipulated. I am expecting another huge bull run once ETFs enter the game.